[....] Starting enhanced syslogd: rsyslogd[ 16.740243] audit: type=1400 audit(1521238310.694:5): avc: denied { syslog } for pid=4071 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.466931] audit: type=1400 audit(1521238313.420:6): avc: denied { map } for pid=4209 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.9' (ECDSA) to the list of known hosts. executing program [ 25.788520] audit: type=1400 audit(1521238319.742:7): avc: denied { map } for pid=4223 comm="syzkaller913882" path="/root/syzkaller913882967" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 31.199543] kasan: CONFIG_KASAN_INLINE enabled [ 31.204256] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.211635] general protection fault: 0000 [#1] SMP KASAN [ 31.217145] Dumping ftrace buffer: [ 31.220656] (ftrace buffer empty) [ 31.224335] Modules linked in: [ 31.227499] CPU: 0 PID: 4223 Comm: syzkaller913882 Not tainted 4.16.0-rc5+ #266 [ 31.234911] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.244241] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 31.249310] RSP: 0018:ffff8801b4bafc78 EFLAGS: 00010206 [ 31.254641] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 31.261881] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 31.269121] RBP: ffff8801b4bafc90 R08: 0000000000000000 R09: 1ffff10036975f0b [ 31.276359] R10: ffff8801b4baf820 R11: 0000000000000001 R12: ffff8801b48c97d2 [ 31.283600] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b4bafd08 [ 31.290851] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:000000000833d840 [ 31.299049] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 31.304899] CR2: 0000000001dc35a8 CR3: 00000001b5ee3006 CR4: 00000000001606f0 [ 31.312142] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.319383] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.326625] Call Trace: [ 31.329192] smc_shutdown+0x3ed/0x540 [ 31.332968] SyS_shutdown+0x137/0x290 [ 31.336741] ? SyS_getsockopt+0x340/0x340 [ 31.340862] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 31.346370] ? do_fast_syscall_32+0x156/0xf9f [ 31.350835] ? SyS_getsockopt+0x340/0x340 [ 31.354956] do_fast_syscall_32+0x3ec/0xf9f [ 31.359249] ? do_int80_syscall_32+0x9c0/0x9c0 [ 31.363800] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.368527] ? syscall_return_slowpath+0x550/0x550 [ 31.373426] ? syscall_return_slowpath+0x2ac/0x550 [ 31.378323] ? prepare_exit_to_usermode+0x350/0x350 [ 31.383310] ? sysret32_from_system_call+0x5/0x3c [ 31.388123] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.392941] entry_SYSENTER_compat+0x70/0x7f [ 31.397317] RIP: 0023:0xf7fe2c99 [ 31.400649] RSP: 002b:00000000ffb2fdac EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 31.408335] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 31.415574] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 31.422813] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 31.430051] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 31.437300] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 31.444549] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac 20 11 fd 48 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 32 4c 8b 63 28 48 b8 00 00 00 00 00 fc ff df 49 [ 31.463615] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b4bafc78 [ 31.470249] ---[ end trace ee8dca7381443a6c ]--- [ 31.474996] Kernel panic - not syncing: Fatal exception [ 31.480696] Dumping ftrace buffer: [ 31.484209] (ftrace buffer empty) [ 31.487891] Kernel Offset: disabled [ 31.491488] Rebooting in 86400 seconds..